Acridine radical anion, dimerization

Crooks, R. M. and Bard, A. J. (1988b) Electrochemistry in near-critical and supercritical fluids. Part V. The dimerization of quinoline and acridine radical anions in ammonia from 70°C to 150°C. J. Electroanal. Chem. 240, 253-279. 

Reductive dimerization of benzene [246], cyano biphenyl ether [247], pyridine [248], and acridine [249] derivatives has also been investigated. Radical anions of diesters of pyridine and benzene undergo rapid reversible dimerization (A dim = 10 -10 M" s" ) [250]. 

Radical anions of acridine (95) dimerize in DMF to give the corresponding dimer dianion [270] (Table 21). The reduction remained a 1-F process upon addition of 10% (v.v) water but led to a fivefold increase in the value of On a voltammetric time scale, the dimerization appeared irreversible in the absence as well as in the presence of water. On a preparative scale, the dimer 9,9, 10,10 -tetrahydro9,9 -biacridyl could be isolated... 

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